<style lang="less">
    @import "../../../styles/tree-common.less";
</style>
<template>
    <div class="search">
        <Card>
            <Row class="operation">
                <Button @click="add" type="primary" icon="md-add">添加子节点</Button>
                <Button @click="addRoot" icon="md-add">添加一级节点</Button>
                <Button @click="delAll" icon="md-trash">删除</Button>
                <Button @click="getParentList" icon="md-refresh">刷新</Button>
                <i-switch v-model="strict" size="large" style="margin-left: 5px">
                    <span slot="open">级联</span>
                    <span slot="close">单选</span>
                </i-switch>
            </Row>
            <Row type="flex" justify="start" :gutter="16">
                <Col :sm="8" :md="8" :lg="8" :xl="6">
                    <Alert show-icon>
                        当前选择编辑：
                        <span class="select-title">{{ editTitle }}</span>
                        <a class="select-clear" v-if="form.id" @click="cancelEdit">取消选择</a>
                    </Alert>
                    <Input
                            v-model="searchKey"
                            suffix="ios-search"
                            @on-change="search"
                            placeholder="输入节点名搜索"
                            clearable
                    />
                    <div class="custom-tree-bar" :style="{ maxHeight: maxHeight }">
                        <Tree
                                ref="tree"
                                :data="data"
                                :render="renderContent"
                                :load-data="loadData"
                                show-checkbox
                                @on-select-change="selectTree"
                                @on-check-change="changeSelect"
                                :check-strictly="!strict"></Tree>
                    </div>
                    <Spin size="large" fix v-if="loading"></Spin>
                </Col>
                <Col :sm="16" :md="16" :lg="16" :xl="9">
                    <Form
                            ref="form"
                            :model="form"
                            :label-width="100"
                            :rules="formValidate">
                        <FormItem label="上级节点" prop="parentTitle">
                            <div style="display: flex">
                                <Input
                                        v-model="form.parentTitle"
                                        readonly
                                        style="margin-right: 10px"
                                />
                                <Poptip
                                        transfer
                                        trigger="click"
                                        placement="right-start"
                                        title="选择上级节点"
                                        width="250">
                                    <Button icon="md-list">选择分类</Button>
                                    <div
                                            slot="content"
                                            style="position: relative; min-height: 5vh">
                                        <Tree
                                                :data="dataEdit"
                                                :load-data="loadData"
                                                @on-select-change="selectTreeEdit"></Tree>
                                        <Spin size="large" fix v-if="loadingEdit"></Spin>
                                    </div>
                                </Poptip>
                            </div>
                        </FormItem>
                        <FormItem label="节点名称" prop="title">
                            <Input v-model="form.title"/>
                        </FormItem>
                        <FormItem label="排序值" prop="sortOrder">
                            <Tooltip
                                    trigger="hover"
                                    placement="right"
                                    content="值越小越靠前，支持小数">
                                <InputNumber
                                        :max="1000"
                                        :min="0"
                                        v-model="form.sortOrder"></InputNumber>
                            </Tooltip>
                        </FormItem>
                        <FormItem label="是否启用" prop="status">
                            <i-switch
                                    size="large"
                                    v-model="form.status"
                                    :true-value="0"
                                    :false-value="-1">
                                <span slot="open">启用</span>
                                <span slot="close">禁用</span>
                            </i-switch>
                        </FormItem>
                        <FormItem class="br">
                            <Button
                                    @click="submitEdit"
                                    :loading="submitLoading"
                                    type="primary"
                                    icon="ios-create-outline">修改并保存
                            </Button>
                            <Button @click="handleReset">重置</Button>
                        </FormItem>
                    </Form>
                </Col>
            </Row>
        </Card>

        <Modal
                :title="modalTitle"
                v-model="modalVisible"
                :mask-closable="false"
                :width="500">
            <Form
                    ref="formAdd"
                    :model="formAdd"
                    :label-width="100"
                    :rules="formValidate">
                <div v-if="showParent">
                    <FormItem label="上级节点：">{{ form.title }}</FormItem>
                </div>
                <FormItem label="节点名称" prop="title">
                    <Input v-model="formAdd.title"/>
                </FormItem>
                <FormItem label="排序值" prop="sortOrder">
                    <Tooltip
                            trigger="hover"
                            placement="right"
                            content="值越小越靠前，支持小数">
                        <InputNumber
                                :max="1000"
                                :min="0"
                                v-model="formAdd.sortOrder"></InputNumber>
                    </Tooltip>
                </FormItem>
                <FormItem label="是否启用" prop="status">
                    <i-switch
                            size="large"
                            v-model="formAdd.status"
                            :true-value="0"
                            :false-value="-1">
                        <span slot="open">启用</span>
                        <span slot="close">禁用</span>
                    </i-switch>
                </FormItem>
            </Form>
            <div slot="footer">
                <Button type="text" @click="cancelAdd">取消</Button>
                <Button type="primary" :loading="submitLoading" @click="submitAdd">提交</Button>
            </div>
        </Modal>
    </div>
</template>

<script>
    export default {
        name: "custom-tree",
        data() {
            return {
                loading: false, // 树加载状态
                maxHeight: "500px",
                strict: true,
                loadingEdit: false, // 编辑上级树加载状态
                modalVisible: false, // 添加显示
                selectList: [], // 多选数据
                showParent: false, // 显示上级标识
                modalTitle: "", // 添加标题
                editTitle: "", // 编辑节点名称
                searchKey: "", // 搜索树
                form: {
                    // 编辑对象初始化数据
                    id: "",
                    parentId: "",
                    parentTitle: "",
                    sortOrder: 0,
                    status: 0,
                },
                formAdd: {
                    // 添加对象初始化数据
                },
                formValidate: {
                    // 表单验证规则
                    title: [{required: true, message: "名称不能为空", trigger: "change"}],
                    sortOrder: [
                        {
                            required: true,
                            type: "number",
                            message: "排序值不能为空",
                            trigger: "change",
                        },
                    ],
                },
                submitLoading: false,
                data: [],
                dataEdit: [],
            };
        },
        methods: {
            init() {
                // 初始化一级节点
                this.getParentList();
                // 初始化一级节点为编辑上级节点使用
                this.getParentListEdit();
            },
            renderContent(h, {root, node, data}) {
                // 自定义render函数 这里主要通过数据中type字段判断 演示使用 当然你可以自定义业务逻辑
                if (data.type == "1") {
                    return h("span", [
                        h("span", [
                            h("Icon", {
                                props: {
                                    type: data.icon,
                                    size: "16",
                                    color: data.color,
                                },
                                style: {
                                    "margin-right": "8px",
                                    "margin-bottom": "3px",
                                },
                            }),
                            h("span", data.title),
                        ]),
                    ]);
                } else if (data.type == "2") {
                    return h("span", [
                        h("span", [
                            h("img", {
                                attrs: {
                                    src: require("@/assets/vip.png"),
                                    alt: "...",
                                },
                                style: {
                                    width: "17px",
                                    height: "17px",
                                    "margin-right": "5px",
                                },
                            }),
                            h("span", data.title),
                        ]),
                    ]);
                } else if (data.type == "3") {
                    return h("span", [
                        h("span", [
                            h(
                                "Avatar",
                                {
                                    props: {
                                        size: "small",
                                    },
                                    style: {
                                        background: data.color,
                                        "margin-right": "5px",
                                    },
                                },
                                data.word
                            ),
                            h("span", data.title),
                        ]),
                    ]);
                } else {
                    return h("span", h("span", data.title));
                }
            },
            getParentList() {
                // this.loading = true;
                // this.this.$http("一级数据请求路径，如/tree/getByParentId/0").then(res => {
                //   this.loading = false;
                //   if (res.status==200) {
                //     res.result.forEach(function(e) {
                //       if (e.isParent) {
                //         e.loading = false;
                //         e.children = [];
                //       }
                //     });
                //     this.data = res.result;
                //   }
                // });
                // 模拟请求成功
                this.data = [
                    {
                        title: "自定义图标",
                        id: "1",
                        type: "1",
                        icon: "logo-apple",
                        color: "",
                        parentId: "0",
                        parentTitle: "一级节点",
                        status: 0,
                        loading: false,
                        children: [
                            {
                                title: "带颜色的自定义图标",
                                id: "2",
                                type: "1",
                                icon: "logo-android",
                                color: "#97c03d",
                                parentId: "1",
                                status: 0,
                                parentTitle: "自定义图标",
                            },
                        ],
                    },
                    {
                        title: "自定义图片",
                        id: "3",
                        type: "2",
                        parentId: "0",
                        parentTitle: "一级节点",
                        status: 0,
                    },
                    {
                        title: "自定义iView组件",
                        id: "4",
                        type: "3",
                        word: "E",
                        color: "orange",
                        parentId: "0",
                        parentTitle: "一级节点",
                        status: -1,
                        loading: false,
                        children: [
                            {
                                title: "自定义iView组件",
                                id: "5",
                                type: "3",
                                word: "字",
                                color: "#c601c6",
                                parentId: "1",
                                status: 0,
                                parentTitle: "自定义iView组件",
                            },
                        ],
                    },
                ];
            },
            getParentListEdit() {
                // this.loadingEdit = true;
                // this.this.$http("/tree/getByParentId/0").then(res => {
                //   this.loadingEdit = false;
                //   if (res.status==200) {
                //     res.result.forEach(function(e) {
                //       if (e.isParent) {
                //         e.loading = false;
                //         e.children = [];
                //       }
                //     });
                //     // 头部加入一级
                //     let first = {
                //       id: "0",
                //       title: "一级节点"
                //     };
                //     res.result.unshift(first);
                //     this.dataEdit = res.result;
                //   }
                // });
                // 模拟请求成功
                this.dataEdit = [
                    {
                        title: "自定义图标",
                        id: "1",
                        type: "1",
                        icon: "logo-apple",
                        color: "",
                        parentId: "0",
                        parentTitle: "一级节点",
                        status: 0,
                        loading: false,
                        children: [
                            {
                                title: "带颜色的自定义图标",
                                id: "2",
                                type: "1",
                                icon: "logo-android",
                                color: "#97c03d",
                                parentId: "1",
                                status: 0,
                                parentTitle: "自定义图标",
                            },
                        ],
                    },
                    {
                        title: "自定义图片",
                        id: "4",
                        type: "2",
                        parentId: "0",
                        parentTitle: "一级节点",
                        status: 0,
                    },
                    {
                        title: "自定义iView组件",
                        id: "5",
                        type: "3",
                        word: "E",
                        color: "orange",
                        parentId: "0",
                        parentTitle: "一级节点",
                        status: -1,
                        loading: false,
                        children: [
                            {
                                title: "自定义iView组件",
                                id: "6",
                                type: "3",
                                word: "字",
                                color: "#c601c6",
                                parentId: "1",
                                status: 0,
                                parentTitle: "自定义iView组件",
                            },
                        ],
                    },
                ];
            },
            loadData(item, callback) {
                // 异步加载树子节点数据
                // this.this.$http("请求路径，如/tree/getByParentId/" + item.id).then(res => {
                //   if (res.status==200) {
                //     res.result.forEach(function(e) {
                //       if (e.isParent) {
                //         e.loading = false;
                //         e.children = [];
                //       }
                //     });
                //     callback(res.result);
                //   }
                // });
            },
            search() {
                // 搜索树
                if (this.searchKey) {
                    // 模拟请求
                    // this.loading = true;
                    // this.this.$http("搜索请求路径", { title: this.searchKey }).then(res => {
                    //   this.loading = false;
                    //   if (res.status==200) {
                    //     res.result.forEach(function(e) {
                    //       if (e.isParent) {
                    //         e.loading = false;
                    //         e.children = [];
                    //       }
                    //     });
                    //     this.data = res.result;
                    //   }
                    // });
                    // 模拟请求成功
                    this.data = [
                        {
                            title: "这里需要请求后端接口",
                            id: "1",
                            parentId: "0",
                            parentTitle: "一级节点",
                            status: 0,
                        },
                        {
                            title: "所以这里是假数据",
                            id: "4",
                            parentId: "0",
                            parentTitle: "一级节点",
                            status: 0,
                        },
                        {
                            title: "我是被禁用的节点",
                            id: "5",
                            parentId: "0",
                            parentTitle: "一级节点",
                            status: -1,
                        },
                    ];
                } else {
                    // 为空重新加载
                    this.getParentList();
                }
            },
            selectTree(v) {
                if (v.length > 0) {
                    // 转换null为""
                    for (let attr in v[0]) {
                        if (v[0][attr] == null) {
                            v[0][attr] = "";
                        }
                    }
                    let str = JSON.stringify(v[0]);
                    let data = JSON.parse(str);
                    this.form = data;
                    this.editTitle = data.title;
                } else {
                    this.cancelEdit();
                }
            },
            cancelEdit() {
                let data = this.$refs.tree.getSelectedNodes()[0];
                if (data) {
                    data.selected = false;
                }
                this.$refs.form.resetFields();
                this.form.id = "";
                this.editTitle = "";
            },
            selectTreeEdit(v) {
                if (v.length > 0) {
                    // 转换null为""
                    for (let attr in v[0]) {
                        if (v[0][attr] == null) {
                            v[0][attr] = "";
                        }
                    }
                    let str = JSON.stringify(v[0]);
                    let data = JSON.parse(str);
                    this.form.parentId = data.id;
                    this.form.parentTitle = data.title;
                }
            },
            cancelAdd() {
                this.modalVisible = false;
            },
            handleReset() {
                this.$refs.form.resetFields();
                this.form.status = 0;
            },
            submitEdit() {
                this.$refs.form.validate((valid) => {
                    if (valid) {
                        if (!this.form.id) {
                            this.$Message.warning("请先点击选择要修改的节点");
                            return;
                        }
                        this.submitLoading = true;
                        // 避免传入null字符串
                        // this.this.$http("请求路径，如/tree/edit", this.form).then(res => {
                        //   this.submitLoading = false;
                        //   if (res.status==200) {
                        //     this.$Message.success("编辑成功");
                        //     this.init();
                        //     this.modalVisible = false;
                        //   }
                        // });
                        // 模拟成功
                        this.submitLoading = false;
                        this.$Message.success("编辑成功");
                        this.modalVisible = false;
                    }
                });
            },
            submitAdd() {
                this.$refs.formAdd.validate((valid) => {
                    if (valid) {
                        this.submitLoading = true;
                        // this.this.$http("请求路径，如/tree/add", this.formAdd).then(res => {
                        //   this.submitLoading = false;
                        //   if (res.status==200) {
                        //     this.$Message.success("添加成功");
                        //     this.init();
                        //     this.modalVisible = false;
                        //   }
                        // });
                        // 模拟成功
                        this.submitLoading = false;
                        this.$Message.success("添加成功");
                        this.modalVisible = false;
                    }
                });
            },
            add() {
                if (!this.form.id) {
                    this.$Message.warning("请先点击选择一个节点");
                    return;
                }
                this.modalTitle = "添加子节点";
                this.showParent = true;
                this.formAdd = {
                    parentId: this.form.id,
                    sortOrder: 0,
                    status: 0,
                };
                this.modalVisible = true;
            },
            addRoot() {
                this.modalTitle = "添加一级节点";
                this.showParent = false;
                this.formAdd = {
                    parentId: 0,
                    sortOrder: 0,
                    status: 0,
                };
                this.modalVisible = true;
            },
            changeSelect(v) {
                this.selectList = v;
            },
            delAll() {
                if (this.selectList.length <= 0) {
                    this.$Message.warning("您还未勾选要删除的数据");
                    return;
                }
                this.$Modal.confirm({
                    title: "确认删除",
                    content:
                        "您确认要删除所选的 " +
                        this.selectList.length +
                        " 条数据及其下级所有数据?",
                    loading: true,
                    onOk: () => {
                        let ids = "";
                        this.selectList.forEach(function (e) {
                            ids += e.id + ",";
                        });
                        ids = ids.substring(0, ids.length - 1);
                        // this.deleteRequest("请求路径，如/tree/delByIds/" + ids).then(res => {
                        //   this.$Modal.remove();
                        //   if (res.status==200) {
                        //     this.$Message.success("删除成功");
                        //     this.selectList = [];
                        //     this.cancelEdit();
                        //     this.init();
                        //   }
                        // });
                        // 模拟成功
                        this.$Modal.remove();
                        this.$Message.success("删除成功");
                        this.selectList = [];
                        this.cancelEdit();
                    },
                });
            },
        },
        mounted() {
            // 计算高度
            let height = document.documentElement.clientHeight;
            this.maxHeight = Number(height - 287) + "px";
            this.init();
        },
    };
</script>